Why might it be necessary to fill kerfs with lamination or bedding resin?

Filling kerfs with lamination or bedding resin is essential for enhancing bonding and structural integrity. When kerfs are present, they can create weak points in the composite material. By filling these gaps with resin, the overall continuity of the laminate is improved, creating a stronger bond between the layers and restoring the integrity of the material in that area. This action helps distribute stresses evenly across the surface and can significantly improve the overall performance and durability of the composite structure.

Other potential purposes for filling kerfs, such as addressing weight modification or aesthetic enhancements, are not the primary reasons for using resin in this context. While preventing water absorption is important in many composite applications, the main focus when filling kerfs is on enhancing structural strength and ensuring a solid bond within the laminate layers, which directly impacts the composite's functionality and resilience.